Cooler Master Reactor Gold 750W Power Supply Review

Layout, design and features …

The Cooler Master Reactor Gold 750W power supply is finely textured, black lacquered and bears the name and power rating in gold letters on the side, as well as the well-known Cooler Master logo. There are neither sharp corners nor sharp edges, so you don’t have to be afraid of scratching it when installing it in an expensive case. On the side with the power plug there are many large ventilation holes, so that the warm air can flow out of the power supply freely.

The necessary airflow is provided by the 120mm fan with its strongly curved rotor blades, which runs particularly quietly and is temperature-controlled. From a PC with case fans, CPU fan and graphics card fan this power supply is impossible to hear out of.

However, Cooler Master has not implemented a completely silent operating mode at low load, but has protected the fan bearing against dust in order to ensure a long service life of the fan. Up to about 500W, the fan should remain practically inaudible, as the fan curve shows.

Of course we would also like to take a look inside the power supply unit.

Contrary to some cheap power supplies, everything here is very cleanly processed. The coolers are sensibly dimensioned, the airflow can easily reach all important places and the capacitors as well as the coils make a high-quality impression.

All possible protective circuits have also been integrated, which immediately deactivate the power supply in the event of a problem. These include overvoltage protection, undervoltage protection, short-circuit protection, overtemperature protection and overload protection. The many logos next to the performance specifications also ensure that the power supply unit complies with current safety standards.

The 80 Plus Gold certification verifies Cooler Master with an efficiency curve which also shows that at the local mains voltage of 230V the efficiency is even slightly higher than at the 110V voltage common in the USA and Asia.

To avoid unpleasant surprises during cabling, the plugs on the power supply unit have been designed and labelled to prevent confusion.

For larger housings the cable lengths should also be sufficient.

The continuous black cables can be integrated discretely into any system. With the exception of the 24-pin sheathed ATX cable, all cable harnesses are designed as flat ribbon cables.

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